40 inch10 Micron PP Sediment Water Filter Cartridge with core is a melt blown filter measuring 40 inches in length with a 2.5 inch diameter. This 40 inch water filter features melt blown polypropylene media and a 10 Micron rating for the reduction of sediment, dust, dirt, and other contaminants in water. This 10 Micron Sediment Filter can also be used as well water filter.